Settings: Improve AOSP JA translations

They translated "hotspot" as "アクセスポイント"(access point) but it just gets us confused.
"テザリング"(Tethering) is preferred than "アクセスポイント"(access point) in Japanese translation.
FYI, most vendors fixed these strings e.g. Samsung and Sony.

Change-Id: If9aeaddc1750d1f8432fa4e1cb2e2ffb41f74b0a
Settings: Set untranslatable

Change-Id: I0702378bab455a7ccf95a174e36bc792d26feec8
Fix upgrade to latest proguard

Change-Id: I3fc77adc895e98673005e89bb99a38744f01bb97
msim: Use the SIM operator to label the subscription

network operator is confusing, and downright misleading in roaming
cases

Change-Id: I3f645bbf1191f086ec0b6ca6cc8669915b2902a4